extrn   s3m_initialize    :       near
extrn   s3m_startplaying  :       near
extrn   s3m_stopplaying   :       near
extrn   s3m_loadmodule    :       near
extrn   _s3m_sd_type      :       byte
extrn   _s3m_sd_iobase    :       word
extrn   _s3m_sd_irq       :       byte
extrn   _s3m_sd_dma       :       byte
extrn   _s3m_synchroval   :       byte
extrn   _s3m_synchrocount :       byte
extrn   _s3m_loopcount    :       byte
